Single-player games like Cosmonator
Below are 11 single-player Steam games similar to Cosmonator, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Cosmonator page.
Ranked picks
- 1

Sky Force Reloaded
Single-player alternative to Cosmonator — playable solo, no multiplayer required. Shares Action and Indie with Cosmonator.
Sky Force Reloaded is a classic shoot ‘em up experience packed in gorgeous visuals and excellent gameplay. Enjoy flashy explosions, beautiful scenery and massive bosses in single player or local cooperative modes.
- 2

Gunlocked
Single-player alternative to Cosmonator — playable solo, no multiplayer required. Shares Action and Indie with Cosmonator.
A twin stick shooter without the twin stick, Gunlocked is a sci-fi action roguelike about careful positioning and upgrade selection. Manage unique targeting systems across multiple weapons and upgrades, as you battle legions of alien ships, and then do it all over again!
- 3

BroodStar
Single-player alternative to Cosmonator — playable solo, no multiplayer required. Shares Action and Indie with Cosmonator.
BroodStar is a classic arcade shmup with roguelike elements. Acquire crazy item combos, encounter strange events and fight challenging bosses on a quest to destroy the living planet, the BroodStar.
- 4

Jets'n'Guns Gold
Single-player alternative to Cosmonator — playable solo, no multiplayer required. Shares Action and Indie with Cosmonator.
Jets'n'Guns is a heavy piece of ground shaking rock blasting action with graphics and special effects that will blow you eyes out! Enjoy yourself in almost-insane action adventure of saving the universe from the deadly threat of more than 270 unique monsters in the campaign of 43 levels.
- 5

Crisis Wing
Single-player alternative to Cosmonator — playable solo, no multiplayer required. Shares Action and Indie with Cosmonator.
Crisis Wing is 90's style vertically scrolling arcade shooter. Master 7 intense vertical stages, and take down massive bosses. Play solo or with a friend in local co-op. Get ready for pure, high-octane action.
- 6

Silent Sector
Single-player alternative to Cosmonator — playable solo, no multiplayer required. Shares Action and Indie with Cosmonator.
Oldschool action open-world sci-fi with a unique storyline, frenetic battles, crude humor, loose morals and cows.
- 7

Drifting Lands
Single-player alternative to Cosmonator — playable solo, no multiplayer required. Shares Action and Indie with Cosmonator.
Drifting Lands is an hybrid of classical horizontal shoot'em'up with a lot of strong gameplay elements coming straight from the action-RPG genre. If you want an original diablo-like game or you want a different kind of shoot'em'up, you're in the right place!
- 8

X-Morph: Defense
Single-player alternative to Cosmonator — playable solo, no multiplayer required. Shares Action and Indie with Cosmonator.
Unique fusion of a top-down shooter and tower defense strategy. You are the invader! Use destructive weapons or lead your enemies into a maze of towers. Strategize in the build mode by carefully selecting various types of alien towers or throw yourself right into the heat of the battle.
- 9

Stardust Galaxy Warriors: Stellar Climax
Single-player alternative to Cosmonator — playable solo, no multiplayer required. Shares Action and Indie with Cosmonator.
Stardust Galaxy Warriors: Stellar Climax is a fast-paced couch co-op action shooter with SHMUP/Brawler gameplay and RPG elements. Choose your mechs, weapons & upgrades then soar through space, defeat evil & save the future... from itself!
- 10

Raptor: Call of The Shadows - 2015 Edition
Single-player alternative to Cosmonator — playable solo, no multiplayer required. Shares Action with Cosmonator.
The great action-crazed, guns blazing, shoot ‘em up game comes back straight out of the ‘90s. Raptor: Call of the Shadows and its futuristic world are ready to challenge your flying skills.
- 11

Raptor: Call of the Shadows (1994 Classic Edition)
Single-player alternative to Cosmonator — playable solo, no multiplayer required. Shares Action with Cosmonator.
Become a mercenary of the future and pilot the super-tech Raptor. Embark on interplanetary missions to knock off top competitors of MegaCorp, battle against hordes of relentless enemies and spend the bounty to expand your devastating arsenal, which can be upgraded with 14 hardcore weapons!